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TLS Online TPP Program

#Question id: 3882

The reverse transcriptase of an animal RNA virus catalyzes:

#XL - Q Biochemistry

  1. degradation of the RNA strand in a DNA-RNA hybrid.

  2. insertion of the viral genome into a chromosome of the host (animal) cell.

  3. RNA formation in the 3'  5' direction.

  4. RNA synthesis, but not DNA synthesis.

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TLS Online TPP Program

#Question id: 20032

#XL - P Chemistry

If threshold wavelength for ejection of electron from metal is 300nm, then work function for photoelectric emission is
TLS Online TPP Program

#Question id: 20033

#XL - P Chemistry

The mass of one mole of electron is
TLS Online TPP Program

#Question id: 20034

#XL - P Chemistry

In two H atoms A and 13 the electrons move around the nucleus in circular orbits of radius r and 4r respectively. The ratio of the times taken by them to complete one revolution is
TLS Online TPP Program

#Question id: 20035

#XL - P Chemistry

For the electronic transition from n = 2 to n = 1 which one of the following will produce shortest wave length?
TLS Online TPP Program

#Question id: 20036

#XL - P Chemistry

The energy required to dislodge electron from excited isolated H atom (IE1 = 13.6eV) is
TLS Online TPP Program

#Question id: 20037

#XL - P Chemistry

Velocity of electron in the first orbit of H-atom is compared to that of velocity of light is approximately